Home / 4,142.23-6,211.20-1,220.15

Finding the Fourth Proportional to 4,142.23, 6,211.20 and 1,220.15

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Solution

The fourth proportional to 4,142.23, 6,211.20 and 1,220.15 is: 1,829.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.23 : 6,211.20 = 1,220.15 : x
  2. Step 2: Convert to fraction form
    4,142.23/6,211.20 = 1,220.15/x
  3. Step 3: Cross multiply
    4,142.23x = 6,211.20 × 1,220.15
  4. Step 4: Simplify right side
    4,142.23x = 7,578,595.68
  5. Step 5: Solve for x
    x = 7,578,595.68/4,142.23
  6. Step 6: Final answer
    x = 1,829.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.